Machines



(No Model.)

A. T. ATHERTON.

CONDENSER FOR ROVING MACHINES. No. 261,294. Patented July 18,1882.

WITNESSES IIVVEIVTOI? W V By hzls Attorney I N PSIEIIS. Photo-Lithograph", Wnhlnglm o. a

UNITED STATES PATENT OFFICE.

ABEL T. ATHERTON, OF LOWELL, MASS., ASSIGNOR TO THE WHITEHEAD 8tv ATHERTON MACHINE COMPANY, OF SAME PLACE.

CONDENSER FOR ROVlNG-fMACHlNES.

SPECIFICATION forming part of Letters Patent No. 261,294, dated July 18, I882.

Application filed April 25,1ss2. (No model.)

To all whom it may concern: a

Be it known that I, ABEL T. ATHERTON, of Lowell, Massachusetts, have invented certain new and useful Improvements in Condensers for Roving-Machines, of which the following is aspecification.

My invention has special reference to the production of a condenser-tube of the kind represented in Kelleys patent, No. 250,043, dated 10 November 22, 188l-that is to say, a condenser-tube provided with a spiral bore of substantially cylindrical cross-section. The condenser represented in said patent: consists of an exterior iron or steel tube, into which is I 5 tightly driven a brass core preliminarily provided with a spiral bore by means of a borecutting tool working through a peripheral slot extending lengthwise of the core. The condenser-tube made in this manner is defective and will not perform its work well. It is almost impossible to make the brass core to exactly till the iron tube, while in any event there will remain at the periphery of the core the metallic edges bounding the slot, and the result is that fibers of cotton from the sliver passing through the condenser catch and gathor on these rough portions of the bore to such an extent as finally to cause the sliver-or roving to soon break down. This defectI propose to remedy as follows: I form and drill out, as

before, the casting forthe external tube. (Lettered C in said Kelley patent). I then place centrally within the tube an iron cylindrical core, which is bent into the form of a spiral hav- 5 ing the pitch and size required for the spiral bore of the condenser, and of a less diameter than the internal diameter of the tube. I then pourinto the tubemolten type metal orother suitable composition metal, which fills the tube 0 and completely surrounds the spiral core. As soon asthe type metal has properly set theiron core is removed, and by this operation a smooth spiral channel or bore substantially cylindrical in eross section is left in the condensertube. If desired, I can cast the type metal 5 or other suitable composition metal core (answerin g to the brass core of the Kelley patented condenser) separately from the external iron tube, employing in this casting operation the spiral iron core, as above provided, in order to obtain a type-metal core with a spiral'bore; and then insert this cast core into the external tube. The result in either case is that I obtain a condenser composed of an outer tube filled with a tubular spirally-bored core whose inner surface is smooth and unbroken at all points from end to end. Such a condenser is represented in the accompanying drawings, inv which Figure l is a longitudinal central section of the condenser with the spirally-bored core in elevation. Fig. 2 is a transverse section, and Fig. 3 is an end elevation of the same.

0. is the external iron orsteel tube, provided with nozzle C flanged rear end, C and Worm- 6 gear d, as in thesaid patented condenser.

The spirally-bored metallic coreis represent- ((1 at d. v

In Fig. 2 the condenser is represented as mounted in a stand similar to that shown and described in said Patent No. 250,013.

What I claim as new and of my invention 1s The hereinbefore-described condenser, consisting of the external tube, in combination with the inner tube cast witha spiral bore of substantially cylindricalcross-section, and with smooth unbroken walls throughout, as herein shown and described.

In testimonywhereof Ihavehereunto setmy 8o Witnesses WILLIAM ROBINSON, E. E. RIPLEY. 

